It is not difficult at all to understand these indicators of switching power supply design!

1. Input voltageChina is generally 220V. Due to the instability of the grid voltage, a wide voltage input is often required, so it is designed to work normally at 90-270V. Usually the US electricity range is 110-130V, and Japan’s electricity range is 100V.2. The ripple of the output voltageSince th

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